22970749 has 4 divisors (see below), whose sum is σ = 23313664. Its totient is φ = 22627836.

The previous prime is 22970743. The next prime is 22970777. The reversal of 22970749 is 94707922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94707922 = 2 ⋅47353961.

It is a cyclic number.

It is not a de Polignac number, because 22970749 - 2³ = 22970741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22970741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171357 + ... + 171490.

It is an arithmetic number, because the mean of its divisors is an integer number (5828416).

Almost surely, 2^22970749 is an apocalyptic number.

It is an amenable number.

22970749 is a deficient number, since it is larger than the sum of its proper divisors (342915).

22970749 is an equidigital number, since it uses as much as digits as its factorization.

22970749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342914.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 22970749 is about 4792.7809255170. The cubic root of 22970749 is about 284.2660874884.

The spelling of 22970749 in words is "twenty-two million, nine hundred seventy thousand, seven hundred forty-nine".